Automatic blower attachment for punch-presses.



. E. CALDERIO.

AUTOMATIC BLOWER ATTACHMENT FOR PUNCH PRE SSES. APPLICATION man MAY 8, 1918.

ii 5%? 1 a Patented Empt. 24, 1918.

WJTNESSES. Y INVENTOR /,r 7?z(/Z fail mm! Calder/'0 I v & BY W j L ATTORNEYS EDWARD, CALDERIO, 0F GARFIELD, NEW JERSEY. ASSIGNOR 0F ONE-HALF T0 Erin/Aim S PATENT OFFIQE? H. WHITTIER, 0F PASSAIC, NEW JERSEY.

j AUTOMATIC BLOWER ATTACHMENT FOR PUNCH-PRESSES.

argest,

Application filed May 831918. Serial in.v 233,402.

To all whom it mag] concern:

' Be it known-jthatpl', EDWARD CALDERIO, a citizen of the United. States, and-a resident of Garfield, in the countyiof Bergen and State of New Jersey, haye 'i'nvented a new and ImprovedAutomatic B lo wer jAttach= ment for Punch-Presses, of-which the following is a full, clear, and exact description;

This invention relates to attachments for reciprocating punch or die presses, andghas particular reference to means for keeping the dies from becoming excessively .hot and also blowing away and cleaning the dies of any dirt or foreign matter, which may have been deposited thereon.

Among'the objects of the invention is to provide an attachment for a punch press including a device or means to automatically project .a stream or streams of cooling fluid such as air upon or against the active cooperating elements of the machine at a time when these elements are separated.

Another object of the invention is to provide a nozzle with automatic means to move it into position between the active elements of the press when they are separated and back out of the path of the moving elements of the press whenthepress is making its down stroke.

Figure 1 is a side elevation of my im provement attached to a reciprocating punch press shown in outline, full lines indicating the position of the attachment when the press plunger is up and indicating in dot ted lines the position that is. caused to be I assumed by the downward movement of the press plunger; and

Figs. 2 and 3 are vertical transverse sectional views on the corresponding lines of Fig. 1.

Referring now more particularly to the drawings, I show at 10 the base or fixed portion of the press having one die member 11, and at 12 I show the upper reciprocat- Specification f,I.e tters Patent.

caused Patented Sept. 24, iaia;

ing member or plunger of the press carrymg the other cooperating die member- 13.-

.As to the particular construction or utility of the press I am not specially concerned except to observe that the member 12- .is' by some suitable power ineansgftof reciprocate toward and fromjhe base 10 to bring the die members 11 and 13 into the desired cooperative relationship and thereby at each upward movement ofthe plunger a free space is observed between the tool members 11 and 13 into which the work or ma-, terial to be operated upon is introduced or adjusted.

14 indicates a flexible tube or from any suitable sourceof cool fiuid sup' ply. and into the end of the tube 11 is fitted a pipe 15 of any suitable length or ca-liberl The free end of the pipe 15 is fitted with a nozzle 16 having groups; of jet holes 16' formed mainly in its upper and lower surfaces. whereby the cool fluid such as air conveyed through the tube, pipe, and nozzle 16 will be delivered against the spaced faces of the tool members 11 and 13 when the nozzle occupies a position in the space betweenthe same as shown in full lines. 4

Any suitable means may be provided to carry the nozzle automatically into and ,Iout of said.space coincidentally with the usual reciprocations of the member 12. To this end I provide upper and lower anchor blocks 17 and 18 fixed respectively in any suitable manner to the plunger 12 and ease 10, each of the anchor blocks bei' pro vided with a vertical series of h fis li" or 18.

19 indicates a cross head fixed to the pipe 15 as by means ofa set screw 20. The cross head ,is provided with laterally projecting inner ends of a main pair of toggle lmks :22 and 23 whose upper and lower ie'lldS tllfg; pivoted respectively at 24 and 25 to the aforesaid anchor' blocks. v the holes 17and 18 for the pivots'fil and 25 is determined according to the extent of reciprocation of the plunger 12, the point of adjustment of the cross head 19 on the pipe 15. and other conditions will meet in practice. The inner cnds of the toggle links 22 and 23 are retained on the trunnions by any suitable means such as washers 26 and nuts 27. v

The pipe 15 is maintained preferahlv hose leadingLJgt) trunnions 21 upon which are journaled'the The sel'ectioirot'i that any mechanic ,washers and nuts 36. The links of each pair arepreferably of equal length and therefore with the pipe 15 secured to the cross head 19 the piple will be. carried in a position always'para before stated preferablyhorizontal.

The nozzle will thus be brought into and out of position directly between the two elements 11 and .13,- the arrangement of the tilt toggle links being such that when the plunger is up the nozzle will be in position directly in the space so as to direct the jets of cooling air against-the tool members. This space? ordinarily is wide enough to admit the work without obstruction and the moment the plunger begins its downward movement the movement of the anchor block 17 toward the block 18, breaking the toggle links, will carry the nozzle out of the path of the plunger. The operation is simple, sure ,and reliable and entails no special attention on the part of the machinist or operator of the press. I

I claim:

1. The combination with a reciprocating lel with itself and as press including stationary and movable parts and coooperating tool members connected to the respective parts, of a cooling air nozzle, and means connected to the respective movable and stationary parts of the members to automatically, bring the nozzle into cooling position directly in the path of the movable part when the relatively movable parts of the press are separated.

2. The combination with the relatively fixed and movable members of a reciprocating press and tools carried thereby, of a cooling fluid nozzle adapted to cooperate with the tools aforesaid, and means to automatically carry said nozzle into and out of the space between the tools coincidentally with the reciprocations of themovable part of the press, said carrying means including toggle members connected to. the nozzle, and means pivotally connectin the toggle members to the fixed and movab' e members of the press.

3. The combination with the relatively fixed and movable members of a press and tool members carried thereby, of a cooling fluid nozzle having upper and lower jet holes directed toward the several tool members, a pipe to which the nozzle is secured, a cross head fixed to the pipe, a pair of anchor blocks secured to the respective fixed and movable parts of the press, a pair of toggle links pivoted respectivelyto the cross head and said blocks, and means cooperating with 'said pipe and toggle links to maintain the pipe in substantial parallelism while it is being moved by the toggle links into and out of the spacebetweenthe tool members.

' EDWARD CALDERIO. 

